Description

Carbomer 951 is a high molecular weight, cross-linked polyacrylic acid polymer widely used as a rheology modifier and suspending agent. Its primary value lies in its exceptional ability to create clear, high-viscosity gels and stable emulsions at low concentrations, even in neutralized systems. This makes it an indispensable ingredient for formulators in the personal care and pharmaceutical industries seeking superior texture and product stability. Key users include manufacturers of topical gels, creams, lotions, and ophthalmic preparations who require reliable performance and batch-to-batch consistency.

Application

• Topical Pharmaceutical Gels: As a primary gelling agent for dermatological and analgesic gels, providing excellent drug suspension and controlled release.
• Personal Care Products: Formulating clear aloe vera gels, after-sun lotions, facial moisturizers, and hair styling gels where clarity and non-tacky feel are critical.
• Ophthalmic Preparations: Used in lubricating eye drops and ocular gels to enhance viscosity and residence time on the corneal surface.
• Cosmetic Emulsions: Stabilizing oil-in-water (O/W) emulsions for creams and lotions, preventing phase separation and improving texture.
• Toiletries: Thickening shower gels, liquid soaps, and shaving creams to achieve desired rheological properties.
• Household & Industrial Products: As a thickener in cleaning gels, polishes, and other aqueous-based formulations requiring stable viscosity.

Basic Information

Product Name	Carbomer 951
CAS No.	134499-36-8
Molecular Formula	(C3H4O2)n
Molecular Weight	>700,000 (Typical)
Synonyms	Carbopol 951; Poly(acrylic acid), crosslinked; Carboxyvinyl polymer; Acrylic acid polymer; Carbomer 934P (related grade); Carbopol 934 (related grade); Carboxypolymethylene; NF Carbomer
EINECS	Contact for details

Quality Control

Our Carbomer 951 is manufactured under a strict quality management system. We ensure compliance with relevant pharmacopeial standards, including USP-NF monographs for Carbomers, where applicable. Each batch undergoes rigorous testing for critical parameters such as viscosity, pH, residue on ignition, and heavy metal content. Certificates of Analysis (COA) documenting full specifications are available upon request to support your quality assurance and regulatory needs.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated area at controlled room temperature (15-25°C). This product is hygroscopic (moisture-sensitive); the container must be kept tightly sealed after opening to prevent caking or degradation due to moisture absorption.

Specification

Item	Specification
Appearance	White, fluffy powder
Identification (IR)	Conforms
Viscosity (1% aq. gel)	45,000 - 65,000 mPa·s
pH (1% aq. dispersion)	2.5 - 3.5
Loss on Drying	≤ 2.0 %
Residue on Ignition	≤ 0.1 %
Heavy Metals	≤ 10 ppm
Microbial Limits	Meets specified requirements

Note: Specifications can be tailored. Please contact us for the detailed technical data sheet of a specific grade.